UPDATE #8..."THE TEST FIT" !!!!!

before I build the frame work, I first mark the floor as per my drawing. then I layout the track plan. this gives me the chance to make any mods to the frame work & I did. examples are, I narrowed the section where the 2 lumber yards are & also narrowed the IM yard. both sections where narrowed by 5". this gives me a wider aisle way. the section at n. Glendale was widened by 2" to accommodate the 5 industries that will be there. I can't believe I have used up all the track I had so far.